A compression sock designed tough enough to tackle the outdoors Sigvaris Merino Outdoor Wool Compression Socks are the ideal compression socks for active people who enjoy the outdoors. Constructed with 100% Australian Merino Wool, these socks are soft, comfortable and itch-free. Sigvaris Merino Outdoor Wool Socks give anyone who loves the great outdoors more energy and improved circulation to help take their adventures to a while new level.